Weather forecast for 10 days
Santo Tomás La Unión, Guatemala

Weather forecast for the weekend

Saturday, 21. Jun

Scattered Thunderstorms
05:36

18:38
CST
Scattered Thunderstorms
27°C / 20°C
  • Wind: 9km/h SSE
  • Humidity: 78%
  • Precip. probability: 68%
  • Precipitation: 8mm
  • UV index: 6
On Saturday, in Santo Tomás La Unión, scattered thunderstorms are expected, with a chance of lightning and gusty winds.
With a high probability, light precipitation is forecasted. Anticipated temperature values will span from a moderately hot 27°C down to a delightful 20°C.
The anticipated maximum temperature will be a few degrees lower than June's typical high of 29.3°C.
Sunrise will be at 05:36 and sunset at 18:38; the daylight will last for 13h and 2min.

Sunday, 22. Jun

Thunderstorms
05:36

18:38
CST
Thunderstorms
26°C / 19°C
  • Wind: 10km/h S
  • Humidity: 78%
  • Precip. probability: 95%
  • Precipitation: 15mm
  • UV index: 8
On Sunday, 22nd of June, the forecast includes possible thunderstorms.
With a high probability, moderate precipitation is predicted. Temperature span will be from a high of a moderately hot 26°C to a low of a breezy 19°C.
Sunday's peak temperature is anticipated to be slightly cooler than June's average high of 29.3°C.
Sunrise will be at 05:36 and sunset at 18:38; the daylight will last for 13h and 2min.

Frequently asked questions

What is the weather forecast for Santo Tomás La Unión for Saturday?
On Saturday, in Santo Tomás La Unión, scattered thunderstorms are expected, with the potential for localized flooding in some areas.
Will it rain on Saturday?
Light precipitation of 8mm is anticipated on Saturday. The possibility of rainfall is 68%.
What will be the highest temperature on Saturday?
On Saturday, the highest temperature will be 27°C, while the lowest temperature will be 20°C.
What is the weather forecast for Santo Tomás La Unión for Sunday?
On Sunday, unstable atmospheric conditions may lead to thunderstorms.
Will it rain on Sunday?
Moderate precipitation of 15mm is forecasted on Sunday. The possibility of rainfall is high at 95%.
What will be the highest temperature on Sunday?
On Sunday, the maximum temperature will be 26°C, while the minimum temperature will be 19°C.
What is the weather forecast for Santo Tomás La Unión for the next ten days?
In Santo Tomás La Unión, a combination of predominantly thunderstorm-prone and occasionally cloudy and rain-soaked weather is predicted for the next ten days.
Will it rain in the next ten days?
In Santo Tomás La Unión, rainfall is forecasted almost every day for the next ten days. Next Friday, with increased precipitation of 27mm, will be the day with the most rainfall.
How warm will it be in the next ten days?
The maximum temperature will vary between 26°C and 27°C, while the minimum temperature will be between 19°C and 20°C.
What will be the warmest and the coldest days?
The warmest days will be Saturday, Monday through Wednesday, with a maximum of 27°C. All other days, the maximum temperature will be the same 26°C.

Long-term weather forecast

Thu19.Jun
  • min.
  • 20°C
Cloudy
Cloudy
  • Wind: 5km/h NNE
  • Humidity: 86%
  • UV index: 0
  • Precip. probability: 12%
  • Precipitation: 0mm
  • 05:36 18:38 CST
Fri20.Jun
  • 26°C
  • 20°C
Thunderstorms
Thunderstorms
  • Wind: 8km/h S
  • Humidity: 80%
  • UV index: 5
  • Precip. probability: 96%
  • Precipitation: 16mm
  • 05:36 18:38 CST
Sat21.Jun
  • 27°C
  • 20°C
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 9km/h SSE
  • Humidity: 78%
  • UV index: 6
  • Precip. probability: 68%
  • Precipitation: 8mm
  • 05:36 18:38 CST
Sun22.Jun
  • 26°C
  • 19°C
Thunderstorms
Thunderstorms
  • Wind: 10km/h S
  • Humidity: 78%
  • UV index: 8
  • Precip. probability: 95%
  • Precipitation: 15mm
  • 05:36 18:38 CST
Mon23.Jun
  • 27°C
  • 19°C
Thunderstorms
Thunderstorms
  • Wind: 10km/h SSE
  • Humidity: 77%
  • UV index: 11
  • Precip. probability: 88%
  • Precipitation: 10mm
  • 05:37 18:38 CST
Tue24.Jun
  • 27°C
  • 19°C
Showers
Showers
  • Wind: 11km/h SSE
  • Humidity: 73%
  • UV index: 9
  • Precip. probability: 86%
  • Precipitation: 8mm
  • 05:37 18:39 CST
Wed25.Jun
  • 27°C
  • 20°C
PM Thunderstorms
PM Thunderstorms
  • Wind: 10km/h SSE
  • Humidity: 75%
  • UV index: 9
  • Precip. probability: 77%
  • Precipitation: 11mm
  • 05:37 18:39 CST
Thu26.Jun
  • 26°C
  • 20°C
Thunderstorms
Thunderstorms
  • Wind: 10km/h SSE
  • Humidity: 80%
  • UV index: 8
  • Precip. probability: 68%
  • Precipitation: 22mm
  • 05:37 18:39 CST
Fri27.Jun
  • 26°C
  • 20°C
Thunderstorms
Thunderstorms
  • Wind: 10km/h SSE
  • Humidity: 82%
  • UV index: 6
  • Precip. probability: 60%
  • Precipitation: 27mm
  • 05:38 18:39 CST
Sat28.Jun
  • 26°C
  • 19°C
Thunderstorms
Thunderstorms
  • Wind: 10km/h SE
  • Humidity: 80%
  • UV index: 6
  • Precip. probability: 60%
  • Precipitation: 17mm
  • 05:38 18:39 CST
For the next ten days, a combination of primarily storm-filled and occasionally cloudy and damp weather is forecasted.
Rainfall is expected on Friday through next Saturday.
The maximum temperature will be almost identical across the forecast window. Highs will range from 26°C to 27°C, while the nighttime low will be also mostly stable, as the minimum temperature is expected to range between 19°C and 20°C.
Saturday, Monday through Wednesday, with the highest temperature of 27°C, will be the warmest days; all other days, the maximum temperature will be the same 26°C.
Updated: Jun 20, 2025 @ 02:54:15 UTC
Published by: Weather Atlas | About Us
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